1. Souza V, Lorenzi H. Botaˆnica Sistema´tica: Guia ilustrado para identificacxa˜o das famı´lias de Angiospermas da flora brasileira, baseado em APG II. Instituto Plantarum, Nova Odessa, 2005. 640 p.

2. de Oliviera ET, Crocomo OJ, Farinha TB, Gallo LA. Large-Scale micropropagation of Aloe vera. Hort sci. 2009;44:1675-1678.

3. Mapp RK, McCarthy TJ. The assessment of purgative principles in Aloes. Planta Medica, New York.  1970;18:361-365.

4. Reynolds T, Dweck AC. Aloe vera leaf gel: A review update. J Ethnopharmacology Lausanne. 1999;68:3-37.

5. Salighehdar F, Sedaqat-Hoor S, Olfati J. Effects of four nutrient solutions on vegetative traits of Aloe vera L. cv. Austin at six harvest periods. ejgcst. 2013;4:15-27.

6. Pareek OP, Sharma BD, Nath V, Singh RS, Bhargawa R. Effect of nitrogen and phosphorus fertilizers and  organic manure on growth and yield of Indina aloe (Aloe barbadensis Mill.). Ann Arid Zone. 1999;38:85-86.

7. Tawaraja K, Turjaman M, Ekamawanti HA. Effect of arbuscular mycorrhizal colonization on nitrogen and phosphorus uptake and growth of Aloe vera L. Hort sci. 2007;42:1737-1739.

8. Trejo LI, Rodríguez-Mendoza MN, Fernández-Luqueño F. Nutrición de cultivos. Manual Ed. Papiro Omega.   México. 2008.

9. Mengel K, Kirkby EA. Nitrogen. p. 347-374. In: Mengel K, Kirkby EA. (eds.), Principles of Plant Nutrition.  4th ed. International Potash Institute. WorldblaufenBern. Switzerland. 1987.  

10. Salsac L, Chaillou S, Morot JF, Lesaint C, Jolivet E. Nitrate and ammonium nutrition in plants. Plant   physiol Biochem. 1987;25:805-812   

11. Baghour M, Ruiz JM, Romero L. Metabolism and efficiency in nitrogen utilization during senescence in pepper plants: Response to nitrogenous fertilization. J Plant Nutr. 2000;23:91-101.

12. Biczak R, Gurgul E, Herman B. The effect of NPK fertilization on yield and content of chlorophyll, sugars and ascorbic acid in celery. Folia Hort. 1998;10:23-34.

13. Smith DL. Field evaluation of the chlorophyll meter to predict yield and nitrogen concentration of   switchgrass. J Plant Nutr. 1999;22:1001-1010.

14. Swiader JM, Moore A. SPAD-chlorophyll response to nitrogen fertilization and evaluation of nitrogen  status in dryland and irrigated pumpkins. J Plant Nutr. 2002;25:1089-1100.

15. Ranganna S. Manual of analysis of fruit and vegetable products, 9th ed., Tata McGraw Hill, New Delhi. 1997.

16. Elliot HA, Dempsey BA. Agronomic effects of land application of water treatment sludges. J Amer Waste Water Assoc 1991;83:126.

17. AOAC. Officials methods of analyses (14th ed.). Arlington, VA, USA. Association of official analytical  chemist. 1984.

18. Latif LA, Daran ABM, Mohamed AB. Relative distribution of minerals an pileus and stalk of some selected  mushroom. Food Chem, 1996;56:115-121.

19. Gbolagade J, Ajayi A, Oku I, Wankasi D. Nutritive value of common wild edible mushrooms from southern Nigeria. Global J biotechnol. 2006;1:19-21.

20. Singleton VL, Rossi JA. Colorimetry of total phenolics with phosphomolybdic-phosphotungstic acid reagent. Amer J Enology Viticuture. 1965;16:144-158.

21. Leong LP, Shui G. An investigation of antioxidant capacity of fruits invSingapore markets. Food chem. 2002;76: 69-75.

22. Miliauskas G, Venskutonis PR, Van Beek TA. Screening of radical scavenging activity of some medicinal  and aromatic plant extracts. Food chem. 2004;85:231-237.                   

23. Jing-Yuan L, Tai-Xia W, Zang-Gen S, Zheng-Hai H.. Relationship between leaf structure and Aloin content  in six species of Aloe L. Acta botanica sinica. 2003;45:504-600.

24. Narsih S, Kumalaningsih W, Wijana S. Identification of aloin and saponin and chemical composition of  volatile constituents from Aloe vera (L.) Peel.J Agric Food Tech. 2012;2:79-84.

25. Patidar A, Bhayadiya RK, Manocha N, Pathan JK, Dubey PK.. Isolation of Aloin from Aloe vera, its  characterization and evaluation for antioxidant activity.IJPRD. 2012;4:24-28.